GB/T 31428-2021Vocabulary relating to coal chemical technology (English PDF)

3.1 Coalchemicaltechnology

Process technology for producing various energy or chemical products using coal as raw material.

Note: Coal chemical technology generally includes two links. coal conversion and subsequent processing.

3.2 Coal conversion

The process of converting coal into gas, liquid and solid products mainly by chemical methods.

3.3 Coal pyrolysis

Coal is continuously heated under different atmospheric conditions without air or without oxidant, and coal undergoes a series of physical changes at different final temperatures.

Chemical and chemical reactions, and the process of generating products such as gas (gas), liquid (tar), solid (semi-coke or coke).

Note: Coal pyrolysis can generally be divided into high temperature pyrolysis (about 900°C~1100°C), medium temperature pyrolysis (about 660°C~750°C) and low temperature pyrolysis (about 500°C~1100°C) 580°C).

3.4 Coal gasification

Under certain temperature and pressure conditions, the process of converting coal into carbon monoxide and hydrogen-based gas with a gasification agent.

Note: Coal gasification mainly includes fixed bed, fluidized bed, entrained bed and other gasification processes.

3.5 Coal liquefaction

The process by which coal is converted into liquid products through a series of chemical processes.

Note: Coal liquefaction is generally divided into direct liquefaction and indirect liquefaction.

3.6 Coal-based chemicals

Chemical products produced from coal.

3.7 Coal-based poly-generation

Using coal as raw material, through the optimization and integration of multiple single technologies, it is a technical system that produces a variety of energy and chemicals. END. Draft Version (GB/T 31428-2021)